Abstract: A redox flow battery system includes: a plurality of banks; a power conversion device provided in each of the plurality of banks; and a controller that controls a state of charge of each of the plurality of banks by controlling the power conversion device. In the redox flow battery system, each of the plurality of banks includes a battery cell that performs charging and discharging by a supply of an electrolytic solution, the plurality of banks include: a plurality of first banks controlled to be in a first state of charge; and one or more second banks excluding the first banks, and the controller controls a state of charge of the second bank to be a second state of charge different from the first state of charge.

Abstract: A redox flow battery operation method that performs charge and discharge by circulating an electrolyte between a tank and a first battery cell, the method includes a main process performing the charge at a current density greater than or equal to 250 mA/cm2.

Abstract: To provide a polymer composition, for example, a polymer composition which contains an alloy resin of polycarbonate and acrylonitrile-butadiene-styrene or acrylonitrile-styrene and in which the impact resistance strength of a degraded thermoplastic resin is improved. A polymer composition contains polycarbonate and acrylonitrile-butadiene-styrene or acrylonitrile-styrene, and further contains a polyester-based thermoplastic elastomer having an ester bond and a compatibilizing agent having compatibility with the polycarbonate and the acrylonitrile-butadiene-styrene or the acrylonitrile-styrene, in which the compatibilizing agent is a compound having an epoxy group in the main chain in the compound.

Abstract: The present invention relates to a transfer medium carrying member that excels in flame retardancy and provides good electrophotographical images. The transfer medium carrying member includes i) a resin and ii) a conductive filler, wherein the resin comprises a polycarbonate resin (a) that has a structural unit including a siloxane structure and a structural unit including a fluorene structure.

Abstract: Provided is a method of erasing an image, including exposing an image, formed by applying ink containing a dye to a recording medium, to an oxidizing gas generated by discharge to erase the image, wherein the dye comprises an anionic anthraquinone dye and a method of recycling a recording medium.

Abstract: The present invention relates to a transfer medium carrying member that excels in flame retardancy and provides good electrophotographical images. The transfer medium carrying member includes i) a resin and ii) a conductive filler, wherein the resin comprises a polycarbonate resin (a) that has a structural unit including a siloxane structure and a structural unit including a fluorene structure.

Abstract: A center rib and a second rib are formed at a tread surface of a pneumatic tire along an outer contour line L1 of a radius R1 whose center is at a tire inner side. A shoulder rib is formed at the tread surface along an outer contour line L2 of a radius R2 whose centeris at a tire inner side. A step between the outer contour line L1 and a ground contact surface of the shoulder rib decreases toward a tire transverse direction outer end portion. Accordingly, when a heavy load is applied to the pneumatic tire, due to the step between, on the one hand, the shoulder rib, and on the other hand, the center rib and the second rib, uneven wear at the second rib can be suppressed. When a light load is applied, because the step decreases toward the tire transverse direction outer end portion, uneven wear of the shoulder rib can be suppressed. The pneumatic tire exhibits excellent uneven wear resistance at all land portions formed on the pneumatic tire.

Abstract: A center rib and a second rib are formed at a tread surface of a pneumatic tire along an outer contour line L1 of a radius R1 whose center is at a tire inner side. A shoulder rib is formed at the tread surface along an outer contour line L2 of a radius R2 whose center is at a tire inner side. A step between the outer contour line L1 and a ground contact surface of the shoulder rib decreases toward a tire transverse direction outer end portion. Accordingly, when a heavy load is applied to the pneumatic tire, due to the step between, on the one hand, the shoulder rib, and on the other hand, the center rib and the second rib, uneven wear at the second rib can be suppressed. When a light load is applied, because the step decreases toward the tire transverse direction outer end portion, uneven wear of the shoulder rib can be suppressed. The pneumatic tire exhibits excellent uneven wear resistance at all land portions formed on the pneumatic tire.

Abstract: An air supply and exhaust system comprising a pneumatic tool, an air supply source, an exhaust apparatus, and at least one double-pipeline air hose. The exhaust apparatus includes a filter through which exhaust from the pneumatic tool passes and is provided apart from the pneumatic tool. The double-pipeline air hose includes two pipelines and connects the pneumatic tool and the air supply source, wherein one of the pipeline is for air supply to the pneumatic tool and the other of pipeline is for exhaust from the pneumatic tool.

Abstract: This invention relates to a pneumatic tire coated with a water-based electrically conductive coating, in which the coating contains a carbon black having a nitrogen adsorption specific surface area (N.sub.2 SA) of 70 m.sup.2 /g-180 m.sup.2 /g and a dibutyl phtalate (DBP) absorption of 70 ml/100 g-180 ml/100 g, a surface active agent and a rubber ingredient.

Abstract: An exhaust mechanism of a pneumatic nailing in which a striking cylinder is accommodated in a body and a striking piston in the striking cylinder is driven to drive a nail when compressed air is supplied to and exhausted from an upper portion of the striking cylinder, comprises: an inner cap arranged in the upper portion of the striking cylinder; a cylinder cap covering the inner cap; an exhaust chamber formed along inside the body between the inner cap and the cylinder cap; and a throttle hole formed in a lower portion of the exhaust chamber, wherein the exhaust air exhausted from the upper portion of the striking cylinder is discharged from the throttle hole via the exhaust chamber.

Abstract: In a compressor drive system for a natural gas liquefaction plant including a plurality of gas turbines each provided in an individual refrigeration cycle for pressurizing a different refrigerant, an electric motor is provided for each of the gas turbines so as to serve both as an auxiliary electric motor for generating a startup torque and as an AC generator, and the excess output power of the gas turbine is converted into electric power by this electric motor when the power requirement of the associated compressor is less than the power output of the gas turbine. Additionally, at least two of the gas turbines are of an identical make which is suitable for driving the compressor of one of the associated refrigeration cycles requiring a larger driving power.